Azure 資料倉儲中具體化檢視類似 SQL Server 中的索引檢視表。 它的限制幾乎與索引檢視表相同 (請參閱建立索引檢視表以取得詳資訊),不過具體化檢視支援彙總函式。 注意 雖然CREATE MATERIALIZED VIEW 不支援 COUNT、DISTINCT、COUNT(DISTINCT 運算式) 或 COUNT_BIG (DISTINCT 運算式),但使用這些函數...
Hi , How to create Materialized view in SQL Server Regards, tgvr
so,. let close it with MS web site words Creating a unique clustered index on a view improves query performance because the view is stored in the database in the same way a table with a clustered index is stored. The query optimizer may use indexed views to speed up the query execution...
sys.pdw_materialized_view_mappings (Transact-SQL) [アーティクル] 2024/07/06 7 人の共同作成者 フィードバック この記事の内容 アクセス許可 関連項目 適用対象: Azure Synapse Analyticsobject_idによって、具体化されたビューを内部オブジェクト名に結び付けます。
SqlServer.Management.DatabaseMaintenance 程序集: Microsoft.SqlServer.MaintenancePlanTasks.dll C# 复制 public static bool IsMaterializedView (Microsoft.SqlServer.Management.Smo.View view); 参数 view View 返回 Boolean 适用于 产品版本 SQL Server .NET SDK 2016 本文内容 定义 适用...
Essentially a materialized view lets you tell the database to periodically refresh a table with the results of a query. You may join, group, and perform calculations. The goal is to increase query performance in a read-heavy environment. ...
often this functionality is notoffered at all. Materialized views were implemented first by the OracleDatabase: the Query rewrite feature was added from version 8i. They are alsosupported in Sybase SQL Anywhere. In IBMDB2, they are called “materialized query tables”; MS SQL called “indexed ...
DBCC PDW_SHOWMATERIALIZEDVIEWOVERHEAD 显示为 Azure Synapse Analytics 或分析平台系统 (PDW) 的具体化视图保留的基表中的增量更改数。
This is where materialized views can help. A table created on top of the base table to give a different view is called materialized view. This view allows the same information in the base table to be queried using a different key or keys. ...
To enable a materialized view for query rewrite: If all of the master tables in the materialized view are in your schema, you must have theQUERYREWRITEprivilege. If any of the master tables are in another schema, you must have theGLOBALQUERYREWRITEprivilege. ...